Answer:
C. Distance and mass.
Explanation:
Objects that have greater mass have more force of gravity between them.
Answer:
3.864 g of C₃H₆
Explanation:
The balanced equation for the reaction is given below:
2C₃H₆ + 9O₂ —> 6CO₂ + 6H₂O
From the balanced equation above,
2 moles of C₃H₆ reacted to produce 6 moles of CO₂
Next, we shall determine the number of mole of C₃H₆ that reacted to produce 0.276 mole of CO₂. This can be obtained as follow:
From the balanced equation above,
2 moles of C₃H₆ reacted to produce 6 moles of CO₂.
Therefore, Xmol of C₃H₆ will react to produce 0.276 moles of CO₂ i.e
Xmol of C₃H₆ = (2 × 0.276)/6
Xmol of C₃H₆ = 0.092 mole
Finally, we shall determine the mass of 0.092 mole of C₃H₆. This can be obtained as follow:
Mole of C₃H₆ = 0.092 mole
Molar mass of C₃H₆ = (12×3) + (6×1)
= 36 + 6
= 42 g/mol
Mass of C₃H₆ =?
Mass = mole × molar mass
Mass of C₃H₆ = 0.092 × 42
Mass of C₃H₆ = 3.864 g
Therefore, 3.864 g of C₃H₆ is needed for the reaction.
Forces can be added only when they both are going in the same direction as 2n +2n = 4n of force in the same direction if they are 2 facing forces they would <span>have had to be subtracted, which ever force is greater that will be the momentum of the force.
Hope this helps.</span>
Answer: The correct option is B.
Explanation: This is an example of radioactive decay and all the radioactive decay processes follow First order of kinetics.
Expression for the half life of first order kinetics is:
We are given:
Putting in above equation, we get:
Expression to calculate the amount of sample which is unchanged is:
where,
N = Amount left after time t
= Initial amount
k = Rate constant
t = time period
Putting value of k = 0.05625 and t = 24.6 in above equation, we get:
The above fraction is the amount of sample unchanged and that is equal to 
Hence, the correct option is B.
